Add media browser functionality like the stock media control card

[ChipWolf]

Is your feature request related to a problem? Please describe. As a user of the Roku card for Home Assistant; I cannot browse media and easily select the app to open without defining them individually.

Describe the solution you'd like I'd like an interface similar to that of the stock Home Assistant Media Control card.

Describe alternatives you've considered So that I don't have to use both cards side-by-side, creating an overlap in functionality & wasted space on my dashboards.